On-Vehicle Inspection - Toyota T100 1996 Service Manual

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Radiator Cap Tester
Radiator Cap
Radiator Cap Tester
1996 TOYOTA T100 (RM449U)
COOLING (3RZ−FE) − RADIATOR
ON−VEHICLE INSPECTION
1. REMOVE RADIATOR CAP
CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot, as fluid
and steam can be blown out under pressure.
2. INSPECT RADIATOR CAP
NOTICE:
If the radiator cap has contaminations,always rinse it with
water.
Using a radiator cap tester, pump the tester and measure the
relief valve opening pressure.
Standard opening pressure:
74 − 103 kPa (0.75 − 1.05 kgf/cm
HINT:
Z02362
Use the tester's maximum reading as the opening pressure.
If the opening pressure is less than standard, replace the radia-
tor cap.
3. INSPECT COOLING SYSTEM FOR LEAKS
(a) Fill the radiator with coolant and attach a radiator cap tes-
ter.
(b) Warm up the engine.
(c) Pump it to 118 kPa (1.2 kgf/cm
the pressure does not drop.
If the pressure drops, check the hoses, radiator or water pump
for leaks. If no external leaks are found, check the heater core,
cylinder block and head.
P14849
4. REINSTALL RADIATOR CAP
2
, 10.7 − 14.9 psi)
2
, 17.1 psi), and check that
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